2018-05-02 20:23 GMT+08:00 Will Deacon <will.deacon@xxxxxxx>: > On Wed, May 02, 2018 at 03:53:21PM +0800, Ganesh Mahendran wrote: >> Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This >> enables Speculative Page Fault handler. > > Are there are tests for this? I'm really nervous about enabling it... Hi, Will I test the arm64 spf on Qcom SDM845 cpu with kernel 4.9. It looks good for performance, and have not found stability issue yet. Thanks. > > Will > >> >> Signed-off-by: Ganesh Mahendran <opensource.ganesh@xxxxxxxxx> >> --- >> This patch is on top of Laurent's v10 spf >> --- >> arch/arm64/Kconfig | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig >> index eb2cf49..cd583a9 100644 >> --- a/arch/arm64/Kconfig >> +++ b/arch/arm64/Kconfig >> @@ -144,6 +144,7 @@ config ARM64 >> select SPARSE_IRQ >> select SYSCTL_EXCEPTION_TRACE >> select THREAD_INFO_IN_TASK >> + select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP >> help >> ARM 64-bit (AArch64) Linux support. >> >> -- >> 1.9.1 >>
